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Apollo Conventional Fire Detection
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Description |
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 Heat Detection. The Series 60 heat detectors are resettable and operate by using a matched pair of thermistors to sense heat. One thermistor is exposed to the ambient temperature, the other is sealed. During normal conditions the two thermistors register similar temperatures, but, on the development a fire, the temperature recorded by the exposed
thermistor will increase rapidly, resulting in imbalance of the thermistors and causing the detector to change to the alarm state. Rate of rise detectors are designed to detect a fire as the temperature increases, but they also have a fixed upper limit at which the detector will go into alarm if the rate of temperature increase has been too slow to trigger the detection earlier. Fixed heat detectors only change to the alarm state
at a preset temperature.
IONISATION SMOKE DETECTOR .
The sensing part of the detector consists of two chambers – an open, outer chamber and a semi-sealed reference chamber within. Mounted in the reference chamber is a low activity radioactive foil of Americium 241 which enables current to
flow between the inner and outer chambers when the detector is powered up. As smoke enters the detector, it causes a reduction of the current flow in the outer chamber and hence an increase in the voltage measured at the junction between the two chambers. The voltage increase is monitored by the electronic circuitry which triggers the detector into the alarm state at a preset threshold. An externally visible LED will light up when
the detector changes to alarm state.
OPTICAL SMOKE DETECTOR.
Optical smoke detectors incorporate a pulsing LED located in a labyrinth within the housing of the detector. The labyrinth is designed to exclude light from any external source. At an angle to the LED is a photo-diode which normally does not
register the column of light emitted by the LED. In the event of smoke from a fi re entering the labyrinth the light pulse from the LED will be scattered and hence registered by the photo-diode. If the photo-diode "sees" smoke on the two following pulses, the detector changes to the alarm state when the indicator LED will light up. The detector housing is identical to that of the ionisation smoke detector. It is distinguished from
this type by having an indicator LED which is clear in quiescent state but produces red light in alarm. The optical detectors are easy to disassemble and clean without the necessity of returning them to the factory. |
 Part Numbers :
Apollo Series 60 Conventional Smoke Detection |
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DESCRIPTION |
Part Number |
Trade
Price
£
(GBP) Ex VAT. |
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Apollo Series 60 Optical
(Photo-Electric) Smoke Detector 24V,
Fire Activated LED.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing Code: 55000-300 |
VFD-60P/A |
£ 35.42 |
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Apollo Series 60 Ionization Smoke Detector 24V, Fire Activated LED.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufactures Code: 55000-200
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VFD-60I/A |
£ 35.42 |
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Apollo Optical Series 60 smoke Detector and combined 57 Deg. C. Heat Detection
Element, 24V
Requires VDB-60SD/A or VDB-60S/A Base.
Manufactures Code: 55000-380 |
VFD-60PH57/A |
£ POA |
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Part Numbers :
Apollo Series 60 Conventional Heat Detection |
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DESCRIPTION |
Part Number |
Trade
Price
£
(GBP) |
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Apollo n bHeat detector Grade 1, with 60 Deg. C. heat element,
Fire Activation LED LED's, EN54, BS5839. Re-settable Action, also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
The VFD-60H60/A offers response time.
Manufacturing Code: 55000-100 |
VFD-60H60/A |
£ 20.87 |
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Apollo Heat detector Grade 2, with 65 Deg. C. heat element,
Fire Activation LED LED's, EN54, BS5839. Re-settable Action, also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing Code: 55000-101 |
VFD-60H65/A |
£ 20.87 |
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Apollo Heat detector with 75 heat element, Grade 3 Fire
Activated LED, EN54. BS5839. Re-settable Action, Also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing Code: 55000-102 |
VFD-60H75/A |
£ 20.87 |
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 Part Numbers :
Apollo Series 65 Conventional Heat Detection |
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DESCRIPTION |
Part Number |
Trade
Price
£
(GBP) |
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57 Deg. C. Rate of Rise Heat detector,
Fire Activation LED, EN54 Class A1R, BS5839. Re-settable Action, also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing Code: 55000-122
Buy On Line
 CPC |
VFD-65H57RR/A |
£ 20.87 |
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75
Deg. C. Rate of Rise Heat Detector, Fire
Activated LED, EN54 Class BR, BS5839. Re-settable Action, Also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing Code: 55000-127 |
VFD-65H75RR/A |
£ 20.87 |
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90 Deg. C. Rate of Rise Heat Detector, Fire
Activated LED, EN54 Class CR, BS5839. Re-settable Action, Also combines a rate of rise action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing
Code: 55000-132 |
VFD-65H90RR/A |
£ 20.87 |
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90 Deg. C. Static Heat Detector, 3 Fire
Activated LED, EN54 Class CS, BS5839. Re-settable Action.
Requires VDB-60SD/A or VDB-60S/A Base.
Manufacturing
Code: 55000-137 |
VFD-65H90S/A |
£ 20.87 |
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